Rectifying tower capable of recovering heat energy

Abstract

The rectifying tower comprises a rectifying tower body, a recycling box is fixed to the outer wall of the bottom of the rectifying tower body, a heat preservation shell is installed on the outer side of the recycling box, the bottom end of a backflow pipe is connected with one side of the bottom end of an equipment box, and a water suction pump is installed at the bottom end of the backflow pipe. A discharge pipe is fixed to the bottom end of one side of the recycling box, the bottom of the discharge pipe is fixedly connected with the top of the equipment box, a water distribution disc is fixedly installed at the bottom end of the discharge pipe, a water distribution pipe is fixedly installed on the edge of the bottom of the water distribution disc, a heat exchange box is fixedly installed on the upper portion of the inner side of the equipment box, and a water inlet pipe is fixedly installed on the top of one side of the heat exchange box; and a drainage pipe is fixedly mounted at the bottom of the other side of the heat exchange box. According to the rectifying tower for heat energy recovery, a novel structural design is adopted, heat radiated outwards by the rectifying tower body is absorbed, efficient heat exchange is carried out, water of a heat absorption system is informed to be recycled, and the use amount of water resources is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of distillation columns, and specifically relates to a distillation column for heat energy recovery. Background Technique

[0002] A distillation column is a tower-type gas-liquid contact device for distillation. By utilizing the property that each component in the mixture has different volatilities, that is, the vapor pressures of each component are different at the same temperature, the light components (i.e., low-boiling substances) in the liquid phase are transferred to the gas phase, while the heavy components (i.e., high-boiling substances) in the gas phase are transferred to the liquid phase, thereby achieving the purpose of separation.

[0003] For the existing distillation column for heat energy recovery, such as the Chinese utility model patent with the publication number CN218458679U and the name of an environmentally friendly distillation column capable of heat energy recovery, it includes a foundation and a distillation column body. The distillation column body is vertically fixed on the upper surface of the foundation. The distillation column body is provided with a recovery mechanism for collecting heat energy, and a collection mechanism is arranged on the right side of the distillation column body. Among them, the recovery mechanism includes an extraction component and a recovery component. The extraction component includes a fan fixed on the upper surface of the distillation column body. The input end of the fan is communicated with an intake pipe that is communicated with the distillation column body at one end, and the output end of the fan is communicated with an exhaust pipe. In the patent solution, "a large amount of steam is generated inside the distillation column body 2. At this time, the control switch of the fan 301 is turned on, and the intake pipe 302 inside the input end of the fan 301 extracts the steam inside the distillation column body 2 and transports it to the exhaust pipe 303 inside the output end." The above solution completely does not conform to the working principle of the existing distillation column. The steam generated inside the distillation column is rich in light components (i.e., low-boiling substances) in the liquid phase. Extracting the steam carrying the low-boiling substances and performing heat exchange will cause the low-boiling substances to directly condense and deposit in the heat exchange structure, not only causing a large amount of waste of the low-boiling substances, which is one of the distillation separation targets, but also blocking the pipes of the heat exchange mechanism, completely deviating from the actual production situation. Therefore, it is necessary to design a distillation column for heat energy recovery for the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a distillation column for heat energy recovery to solve the problem proposed in the above background technique that the existing distillation column for heat energy recovery completely deviates from the actual production situation, which will cause the low-boiling substances to directly condense and deposit in the heat exchange structure, not only causing a large amount of waste of the low-boiling substances, which is one of the distillation separation targets, but also blocking the pipes of the heat exchange mechanism.

[0005] To achieve the above object, the present utility model provides the following technical solutions: A rectifying column for heat recovery, comprising a rectifying column body, a recovery box is fixed on the outer wall of the bottom of the rectifying column body, a heat preservation shell is installed outside the recovery box, a heat conduction groove is opened on the inner wall of the recovery box close to the rectifying column body, a spray pipe is fixedly installed at the top of the inner wall, an atomizing nozzle is fixed at the bottom end of the spray pipe, one side of the spray pipe is connected to the top end of a reflux pipe, the bottom end of the reflux pipe is connected to one side of the bottom end of an equipment box, a water pump is installed at the bottom end of the reflux pipe, a discharge pipe is fixed at one side of the bottom end of the recovery box, the bottom of the discharge pipe is fixedly connected to the top of the equipment box, a water separation plate is fixedly installed at the bottom end of the discharge pipe, a water distribution pipe is fixedly installed at the bottom edge of the water separation plate, a heat exchange box is fixedly installed in the upper part inside the equipment box, a water inlet pipe is fixedly installed at the top of one side of the heat exchange box, and a drain pipe is fixedly installed at the bottom of the other side of the heat exchange box.

[0006] Preferably, the heat conduction groove is set to be arc-shaped, and the heat conduction grooves are equidistantly distributed on the inner wall of the recovery box close to the rectifying column body.

[0007] Preferably, the atomizing nozzles are angularly distributed about the center of the spray pipe at the bottom end of the spray pipe, and the upward view shape of the spray pipe is annular.

[0008] Preferably, the center of the vertical part of the discharge pipe and the center of the water separation plate are on the same vertical line, and the diameter of the water separation plate is more than twice the diameter of the discharge pipe.

[0009] Preferably, the water distribution pipes are inclined, and the water distribution pipes are angularly distributed about the center of the water separation plate.

[0010] Preferably, the overall height of the heat exchange box is greater than half of the overall height of the equipment box, and the front view profile shape of the inner wall of the heat exchange box is funnel-shaped.

[0011] Compared with the prior art, the beneficial effects of the present utility model are: The rectifying column for heat recovery adopts a novel structural design, absorbs the heat radiated from the rectifying column body, and conducts efficient heat exchange. At the same time, the water in the heat absorption system is recycled, greatly reducing the water consumption;

[0012] 1. The water is atomized through the spray pipe and the atomizing nozzles, and the heat radiated from the rectifying column body is efficiently absorbed by the dense water mist. The heat conduction grooves increase the heat radiation area. At the same time, a closed circulation mechanism is formed through the reflux pipe, the equipment box and the discharge pipe to recycle the water and reduce the water consumption;

[0013] 2. The water that has absorbed heat is dispersed and discharged through the water distribution tray and the water distribution pipes, contacts the inclined inner surface of the copper heat exchange box, and conducts efficient heat exchange, so that the water in the heat exchange box is discharged and utilized after absorbing heat. The water discharged from the water distribution tray and the water distribution pipes that have absorbed heat is then introduced into the spray pipe through the return pipe under the action of the water pump. Brief Description of the Drawings

[0014] Figure 1 It is a front view structural schematic diagram of the present utility model;

[0015] Figure 2 It is a front view sectional structural schematic diagram of the recovery box and the equipment box of the present utility model;

[0016] Figure 3 It is a bottom view sectional structural schematic diagram of the recovery box of the present utility model;

[0017] Figure 4 It is a top view structural schematic diagram of the discharge pipe and the water distribution tray of the present utility model.

[0018] In the figure: 1, rectification tower body; 2, recovery box; 3, heat preservation shell; 4, heat conduction groove; 5, spray pipe; 6, atomizing nozzle; 7, return pipe; 8, equipment box; 9, discharge pipe; 10, water distribution tray; 11, water distribution pipe; 12, heat exchange box; 13, water inlet pipe; 14, drain pipe; 15, water pump. Detailed Embodiment

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figures 1-4, the utility model provides a technical solution: a rectification column for heat recovery, including a rectification column body 1, a recovery box 2, a heat preservation outer shell 3, a heat conduction groove 4, a spray pipe 5, an atomizing nozzle 6, a reflux pipe 7, an equipment box 8, a discharge pipe 9, a water separation plate 10, a water distribution pipe 11, a heat exchange box 12, a water inlet pipe 13, a drain pipe 14 and a water pump 15. A recovery box 2 is fixed on the outer wall of the bottom of the rectification column body 1. A heat preservation outer shell 3 is installed outside the recovery box 2. A heat conduction groove 4 is opened on the inner wall of the recovery box 2 close to the rectification column body 1. A spray pipe 5 is fixedly installed at the top of the inner wall. The bottom end of the spray pipe 5 is fixed with an atomizing nozzle 6. One side of the spray pipe 5 is connected to the top end of the reflux pipe 7. The bottom end of the reflux pipe 7 is connected to one side of the bottom end of the equipment box 8. A water pump 15 is installed at the bottom end of the reflux pipe 7. One bottom end of the recovery box 2 is fixed with a discharge pipe 9. The bottom of the discharge pipe 9 is fixedly connected to the top of the equipment box 8. A water separation plate 10 is fixedly installed at the bottom end of the discharge pipe 9. The bottom edge of the water separation plate 10 is fixedly installed with a water distribution pipe 11. The heat exchange box 12 is fixedly installed in the upper part inside the equipment box 8. The top of one side of the heat exchange box 12 is fixedly installed with a water inlet pipe 13. The bottom of the other side of the heat exchange box 12 is fixedly installed with a drain pipe 14.

[0021] In this example, the heat conduction groove 4 is set to be arc-shaped, and the heat conduction grooves 4 are evenly distributed on the inner wall of the recovery box 2 close to the rectification column body 1. The above structural design increases the radiation area of heat, also improves the contact area between the water mist and the inner wall of the recovery box 2, and improves the heat absorption efficiency.

[0022] The atomizing nozzles 6 are evenly distributed at equal angles around the center of the spray pipe 5 at the bottom end of the spray pipe 5. The upward view shape of the spray pipe 5 is annular. The above structural design enables there to be sufficient dense water mist in the recovery box 2 to efficiently absorb the heat conducted from the rectification column body 1 to the recovery box 2.

[0023] The center of the vertical part of the discharge pipe 9 and the center of the water separation plate 10 are on the same vertical line. The diameter of the water separation plate 10 is more than twice the diameter of the discharge pipe 9. The above structural design enables the water separation plate 10 to evenly disperse the water discharged from the discharge pipe 9, facilitating the discharge into the water distribution pipe 11.

[0024] The water distribution pipe 11 is inclined and evenly distributed at equal angles around the center of the water separation plate 10. The above structural design enables the water that has absorbed heat to be dispersed through the water distribution pipe 11 to contact the inner wall of the heat exchange box 12, expanding the contact area and improving the heat exchange efficiency.

[0025] The overall height of the heat exchange box 12 is greater than half of the overall height of the equipment box 8. The front view profile shape of the inner wall of the heat exchange box 12 is funnel-shaped. The above structural design ensures that the water discharged from the water distribution pipe 11 can contact the inner surface of the heat exchange box 12 over a large area. Even because the opening at the bottom end inside the heat exchange box 12 is small, the water discharged from the water distribution pipe 11 can accumulate at the bottom and cannot fall quickly, prolonging the heat exchange time.

[0026] Working principle: When using this device, first add sufficient clean water into the equipment box 8 through the pipe orifice on the left side of the top of the equipment box 8 in Figure 2 such that the water level at the bottom inside the equipment box 8 is close to the bottom of the heat exchange box 12, and add sufficient water into the heat exchange box 12 through the water inlet pipe 13. Start the water pump 15. The water pump 15 sends the cold clean water into the spray pipe 5 through the return pipe 7. The atomizing nozzles 6 at the bottom of the spray pipe 5 spray out the clean water, forming a dense water mist in the recovery box 2. The water mist directly contacts the inner side wall of the recovery box 2, absorbing the heat conducted from the rectifying tower body 1 to the recovery box 2 and the heat radiated into the space inside the recovery box 2;

[0027] Subsequently, the water mist that has absorbed heat condenses and accumulates at the bottom inside the recovery box 2, is discharged through the discharge pipe 9, and is dispersed and evenly discharged onto the inclined surface inside the heat exchange box 12 through the water distribution tray 10 and the water distribution pipes 11. The water that has absorbed heat contacts the copper heat exchange box 12, and the heat is quickly conducted to the water inside the heat exchange box 12. Moreover, since the opening at the bottom inside the heat exchange box 12 is relatively small, the water discharged from the water distribution pipes 11 can accumulate at the bottom and cannot fall quickly, prolonging the heat exchange time with the heat exchange box 12. The water that has absorbed heat accumulates at the bottom of the equipment box 8 and is continuously sent into the return pipe 7 by the water pump 15 to repeat the above heat absorption steps. After the water inside the heat exchange box 12 absorbs heat, regularly open the drain pipe 14 to discharge and utilize it, and supplement sufficient cold water through the water inlet pipe 13. This is the working principle of the rectifying tower for heat energy recovery.

[0028] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A distillation column for heat energy recovery, comprising a distillation column body (1), characterized in that: A recovery box (2) is fixed on the outer wall of the bottom of the rectification tower body (1). A heat preservation shell (3) is installed on the outside of the recovery box (2). A heat conduction groove (4) is formed on the inner wall of the recovery box (2) close to the rectification tower body (1). A spray pipe (5) is fixedly installed at the top of the inner wall. An atomizing nozzle (6) is fixed at the bottom end of the spray pipe (5). One side of the spray pipe (5) is connected to the top end of a reflux pipe (7). The bottom end of the reflux pipe (7) is connected to one side of the bottom end of an equipment box (8). A water pump (15) is installed at the bottom end of the reflux pipe (7). A discharge pipe (9) is fixed at the bottom of one side of the recovery box (2). The bottom of the discharge pipe (9) is fixedly connected to the top of the equipment box (8). A water separation plate (10) is fixedly installed at the bottom end of the discharge pipe (9). A water distribution pipe (11) is fixedly installed at the bottom edge of the water separation plate (10). A heat exchange box (12) is fixedly installed at the upper part inside the equipment box (8). A water inlet pipe (13) is fixedly installed at the top of one side of the heat exchange box (12). A drain pipe (14) is fixedly installed at the bottom of the other side of the heat exchange box (12).

2. The rectifying column for heat energy recovery according to claim 1, wherein: The heat conduction groove (4) is arranged in an arc shape and is equidistantly distributed on the inner wall of the recovery box (2) close to the rectification tower body (1).

3. A rectification column for heat energy recovery according to claim 1, characterized in that: The atomizing nozzles (6) are angularly distributed about the center of the spray pipe (5) at the bottom end of the spray pipe (5), and the upward view shape of the spray pipe (5) is annular.

4. The rectifying column for heat energy recovery according to claim 1, characterized in that: The center of the vertical part of the discharge pipe (9) and the center of the water separation plate (10) are on the same vertical line, and the diameter of the water separation plate (10) is more than twice the diameter of the discharge pipe (9).

5. A rectifying column for heat energy recovery according to claim 1, characterized in that: The water distribution pipe (11) is inclined and is angularly distributed about the center of the water separation plate (10).

6. The rectification column for heat energy recovery according to claim 1, wherein: The overall height of the heat exchange box (12) is greater than half of the overall height of the equipment box (8), and the front view cross-sectional shape of the inner wall of the heat exchange box (12) is funnel-shaped.

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